TheStreet's Action Alerts PLUS Portfolio Manager Jim Cramer is keeping an eye on shares of Sherwin-Williams (SHW - Get Report) , following its roughly $9 billion acquisition of Valspar (VAL - Get Report) . 'Valspar had been an underachiever,' Cramer said, adding that the company lost some business to Lowe's Companies (LOW - Get Report) in 2014. Cramer said the merger of Sherwin-Williams and Valspar was a very good deal for Sherwin and that he wants to buy shares of Sherwin. He also said he wants to buy PPG Industries (PPG - Get Report) , which he said is undervalued. Cramer is also fond of RPM International (RPM - Get Report) .